﻿using System;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            String[] str = { "ss", "zz", "qq" };
            for (int i = 0; i < str.Length; i++)
            {
                Console.Write(i);
            }



            Double[,] dou = { { 80, 90 }, { 60, 80 }, { 90, 70 } };
            for (int i=0;i<dou.GetLength(0); i++)
            {
                Console.WriteLine("第"+(i+1)+"个学生成绩");
                for(int j=0;j<dou.GetLength(1); j++)
                {
                    Console.Write(dou[i,j]+" ");
                }
                Console.WriteLine();




                int[][] arr = new int[2][];
                arr[0] = new int[] { 1, 2 };
                arr[1] = new int[] { 3, 4, 5 };
                for (int x = 0; x < arr.Length; x++)
                {
                    Console.WriteLine("第"+(x+1)+"行");
                    for (int m = 0; m < arr[x].Length; m++)
                    {
                        Console.Write(arr[x][m]+" ");
                    }
                    Console.WriteLine();
                }



                int[][] arraus = new int[3][];
                arraus[0] = new int[2];
                arraus[1] = new int[3];
                arraus[2] = new int[4];
                for(int a = 0; a < arraus.Length; a++)
                {
                    Console.WriteLine("输出第"+(a+1)+"行");
                    for(int b=0;b<arraus[a].Length; b++)
                    {
                        arraus[a][b] = int.Parse(Console.ReadLine());
                    }
                    Console.WriteLine();
                }
            }
        }
    }
}
